I've always felt ASMR as like a kind of tickling on my scalp and neck - like one of those weird scalp massaging things? It's just noises and images (I've found light stimuli - like fake eye tests and whatnot to make me drowsy) that relax ya. It's just a super quick way to doze off in my case.
While yeah, there are defs weird Redditors that listen to it to get off, I've always just used it as white noise. I can't use it to study or work or anything though because I just get too sleepy.